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2008-03-19sched: retune wake granularityIngo Molnar
reduce wake-up granularity for better interactivity. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-19sched: wakeup-buddy tasks are cache-hotIngo Molnar
Wakeup-buddy tasks are cache-hot - this makes it a bit harder for the load-balancer to tear them apart. (but it's still possible, if the load is sufficiently assymetric) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-19sched: improve affine wakeupsIngo Molnar
improve affine wakeups. Maintain the 'overlap' metric based on CFS's sum_exec_runtime - which means the amount of time a task executes after it wakes up some other task. Use the 'overlap' for the wakeup decisions: if the 'overlap' is short, it means there's strong workload coupling between this task and the woken up task. If the 'overlap' is large then the workload is decoupled and the scheduler will move them to separate CPUs more easily. ( Also slightly move the preempt_check within try_to_wake_up() - this has no effect on functionality but allows 'early wakeups' (for still-on-rq tasks) to be correctly accounted as well.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-19sched, net: socket wakeups are syncIngo Molnar
'sync' wakeups are a hint towards the scheduler that (certain) networking related wakeups likely create coupling between tasks. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-19sched: clean up wakeup balancing, code flowIngo Molnar
Clean up the code flow. No code changed: kernel/sched.o: text data bss dec hex filename 42521 2858 232 45611 b22b sched.o.before 42521 2858 232 45611 b22b sched.o.after md5: 09b31c44e9aff8666f72773dc433e2df sched.o.before.asm 09b31c44e9aff8666f72773dc433e2df sched.o.after.asm Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-19sched: clean up wakeup balancing, rename variablesIngo Molnar
rename 'cpu' to 'prev_cpu'. No code changed: kernel/sched.o: text data bss dec hex filename 42521 2858 232 45611 b22b sched.o.before 42521 2858 232 45611 b22b sched.o.after md5: 09b31c44e9aff8666f72773dc433e2df sched.o.before.asm 09b31c44e9aff8666f72773dc433e2df sched.o.after.asm Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-19sched: clean up wakeup balancing, move wake_affine()Ingo Molnar
split out the affine-wakeup bits. No code changed: kernel/sched.o: text data bss dec hex filename 42521 2858 232 45611 b22b sched.o.before 42521 2858 232 45611 b22b sched.o.after md5: 9d76738f1272aa82f0b7affd2f51df6b sched.o.before.asm 09b31c44e9aff8666f72773dc433e2df sched.o.after.asm (the md5's changed because stack slots changed and some registers get scheduled by gcc in a different order - but otherwise the before and after assembly is instruction for instruction equivalent.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-18Merge branch 'audit.b49' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b49' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] export sessionid alongside the loginuid in procfs
2008-03-18[PATCH] export sessionid alongside the loginuid in procfsEric Paris
Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-03-18Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: update key codes for Apple aluminium HID: fix comment in hid_input_report() HID: BADPAD entry for NATSU Playstation USB adapter HID: Use DIV_ROUND_UP HID: remove HID_QUIRK_APPLE_ISO_KEYBOARD for 4th generation macbook
2008-03-18Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPI: Set flag DOCK_UNDOCKING when triggered via sysfs Revert "ACPI: video: Ignore devices that aren't present in hardware" asus_acpi: remove misleading mask Revert "ACPI: video: Ignore ACPI video devices that aren't present in hardware" thermal: delete "default y" thermal: re-document thermal units Revert "thermal: fix generic thermal I/F for hwmon" ACPI: fix ATA_ACPI build ACPI: battery: Don't return -EFAIL on broken packages. ACPI: lockdep warning on boot, 2.6.25-rc5
2008-03-18Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: ALPS - fix forward/back buttons reversed on Acer 5520-5290 Input: ALPS - put secondary device in proper place in sysfs Input: wacom - add support for Bamboo1, BambooFun, and Cintiq 12WX Input: document i8042.noloop Input: add keyboard notifier documentation Input: ads7846 - fix uninitialized var warning Input: i8042 - add SNI RM support Input: i8042 - add Lenovo 3000 N100 to nomux blacklist Input: i8042 - fix warning on non-x86 builds Input: cobalt_btns - assorted fixes
2008-03-18Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6: make selinux_parse_opts_str() static
2008-03-18Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: Revert "unexport bio_{,un}map_user" relay: fix subbuf_splice_actor() adding too many pages The ps2esdi driver was marked as BROKEN more than two years ago due to being
2008-03-18Merge branch 'drm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/ati_pcigart: fix the PCIGART to use drm_pci to allocate GART table. drm/radeon: fixup RV550 chip family drm/via: attempt again to stabilise the AGP DMA command submission. drm: Fix race that can lockup the kernel
2008-03-18HID: update key codes for Apple aluminiumMichael Hanselmann
F5 and F6 have no second function printed on them. Thus their definitions have been removed from the table. KEY_CYCLEWINDOWS doesn't name the function of Mac OS X' Expose properly and because we couldn't find a better key code, we decided to use KEY_FN_F4 instead. We also changed KEY_BACK and KEY_FORWARD, which apply to browser functions, to KEY_PREVIOUSSONG and KEY_NEXTSONG, since the keys are intended to control a music player. Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-03-18HID: fix comment in hid_input_report()Jiri Kosina
The hid_input_report() in debug mode of course outputs the report itself, not the device report descriptor. Fix this error in comment. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-03-18HID: BADPAD entry for NATSU Playstation USB adapterAndrew Burton
Add quirk entry for BADPAD for the NATSU Playstation USB adapter. The adapter is supported under Linux, but with bad direction detection. Signed-off-by: Andrew Burton <adb@iinet.net.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-03-18HID: Use DIV_ROUND_UPJulia Lawall
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) / (d)) but is perhaps more readable. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-03-18HID: remove HID_QUIRK_APPLE_ISO_KEYBOARD for 4th generation macbookTobias Mueller
4th generation MacBook (product id 0x022a) from Apple doesn't need HID_QUIRK_APPLE_ISO_KEYBOARD fix anymore. Signed-off-by: Tobias Mueller <Tobias_Mueller@twam.info> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-03-18Merge branches 'release' and 'dock' into releaseLen Brown
2008-03-18ACPI: Set flag DOCK_UNDOCKING when triggered via sysfsHolger Macht
begin_undock() is only called when triggered via a acpi notify handler (pressing the undock button on the dock station), but complete_undock() is always called after the eject. So if a undock is triggered through a sysfs write, the flag DOCK_UNDOCKING has to be set for the dock station, too. Otherwise this will freeze the system hard. Signed-off-by: Holger Macht <hmacht@suse.de> Acked-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18Merge branches 'release', 'asus', 'bugzilla-8573', 'bugzilla-9995', ↵Len Brown
'bugzilla-10272', 'lockdep' and 'thermal' into release
2008-03-18Revert "ACPI: video: Ignore devices that aren't present in hardware"Len Brown
This reverts commit 0119509c4fbc9adcef1472817fda295334612976. http://bugzilla.kernel.org/show_bug.cgi?id=9995 Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18asus_acpi: remove misleading maskJulia Lawall
led_out is boolean, so there is no functional change here, but apparently an extra mask with 1 caused some style checkers to flag this as logic bug. Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Luca Tettamanti <kronos.it@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18Revert "ACPI: video: Ignore ACPI video devices that aren't present in hardware"Len Brown
This reverts commit 3fa2cdcc45a0176de15cac9dbf4ed2834ebf8932. http://bugzilla.kernel.org/show_bug.cgi?id=9995 Signed-off-by: Len Brown <len.brown>
2008-03-18thermal: delete "default y"Len Brown
The generic thermal I/F gets selected by ACPI_THERMAL -- its only current customer. it doesn't need to clutter other configs by default. Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18thermal: re-document thermal unitsZhang, Rui
From: Zhang Rui <rui.zhang@intel.com> (reverting the previous sysfs patch also reverted a fix to the thermal units documentation, which is restored by this commit) The generic thermal driver shows temperature in millidegree Celsius. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18Revert "thermal: fix generic thermal I/F for hwmon"Len Brown
This reverts commit 3152fb9f11cdd2fd8688c2c5cb805e5c09b53dd9. This broke libsensors. Acked-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18Input: ALPS - fix forward/back buttons reversed on Acer 5520-5290Laszlo Kajan
ALPS_FW_BK_1 protocol flavor seems to have forward and backward keys reversed. Signed-off-by: Laszlo Kajan <kajla@bioinfo.pl> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-03-18Input: ALPS - put secondary device in proper place in sysfsDmitry Torokhov
Secondary input device did not have parent set up causing it to appear in the root of sysfs device hierarchy. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-03-18ACPI: fix ATA_ACPI buildLen Brown
drivers/ata/libata-acpi.c fails to build drivers/built-in.o: In function `ata_acpi_associate': (.text+0x7106a): undefined reference to `register_hotplug_dock_device' When CONFIG_ATA_ACPI=y and CONFIG_ACPI_DOCK=m But if dock is selected from ata_acpi, dock will =y when ata_acpi=y, avoiding this problem. http://bugzilla.kernel.org/show_bug.cgi?id=10272 Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-17ACPI: battery: Don't return -EFAIL on broken packages.Alexey Starikovskiy
Acer BIOS has a bug which is exposed when a dead battery is present. The package template that is used to describe battery status is over-written with sane values when the battery is live. But when the batter is dead, a bogus reference in the template is used. In this case, Linux returns a fault, when instead it should simply return that it doesn't know the missing value. http://bugzilla.kernel.org/show_bug.cgi?id=8573 http://bugzilla.kernel.org/show_bug.cgi?id=10202 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-17pciehp: don't enable slot unless forcedMark Lord
This fixes a 2.6.25 regression reported by Alex Chiang. Invoke pciehp_enable_slot() at startup only when pciehp_force=1. Some HP equipment apparently cannot cope with it otherwise. This restores the (previously working) 2.6.24 behaviour here, while allowing machines that need a kick to use pciehp_force=1. This was the original design back in October 2007, but Kristen suggested we try without it first: Kristen Carlson Accardi wrote: >I think it would be ok to try allowing the slot to be enabled when not >using pciehp_force mode. We can wrap it later if it proves to break things This ended up breaking one of Alex's setups, so it's time to put the wrapper back in now. Signed-off-by: Mark Lord <mlord@pobox.com> Acked-by: Alex Chiang <achiang@hp.com> Acked-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-18make selinux_parse_opts_str() staticAdrian Bunk
This patch makes the needlessly global selinux_parse_opts_str() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
2008-03-17Revert "unexport bio_{,un}map_user"Jens Axboe
Outside users like asmlib uses the mapping functions. API wise, the export is definitely sane. It's a better idea to keep this export than to require external users to open-code this piece of code instead. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-17Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: ahci: Add Marvell 6121 SATA support pata_ali: use atapi_cmd_type() to determine cmd type instead of transfer size ahci: implement skip_host_reset parameter ahci: request all PCI BARs devres: implement pcim_iomap_regions_request_all() libata-acpi: improve dock event handling
2008-03-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: virtio: fix race in enable_cb virtio: Enable netpoll interface for netconsole logging virtio: handle > 2 billion page balloon targets virtio: Fix sysfs bits to have proper block symlink virtio: Use spin_lock_irqsave/restore for virtio-pci
2008-03-17hfs_bnode_find() can fail, resulting in hfs_bnode_split() breakageAl Viro
oops and fs corruption; the latter can happen even on valid fs in case of oom. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-17ahci: Add Marvell 6121 SATA supportJose Alberto Reguero
Signed-off-by: Jose Alberto Reguero <jareguero@telefonica.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17pata_ali: use atapi_cmd_type() to determine cmd type instead of transfer sizeTejun Heo
pata_ali was using qc->nbytes to determine whether a command is data transfer type or not. As now qc->nbytes can be extended by padding and draining buffers, these tests are not useful anymore. Use atapi_cmd_type() instead. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17ahci: implement skip_host_reset parameterTejun Heo
Under certain circumstances (SSP turned off by the BIOS) and for debugging purposes, skipping global controller reset is helpful. Add a kernel parameter for it. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17ahci: request all PCI BARsTejun Heo
ahci is often implemented with accompanying SFF compatible interface and legacy IDE driver may attach to the legacy IO ports when the controller is already claimed by ahci and vice-versa. This patch makes ahci use pcim_iomap_regions_request_all() so that all IO regions are claimed on attach. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17devres: implement pcim_iomap_regions_request_all()Tejun Heo
Some drivers need to reserve all PCI BARs to prevent other drivers misusing unoccupied BARs. pcim_iomap_regions_request_all() requests all BARs and iomap specified BARs. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17libata-acpi: improve dock event handlingTejun Heo
Improve ACPI hotplug handling such that dock event is handled properly. * Register handlers for dock events. * Directly detach device on EJECT_REQUEST instead of signaling hotplug event. This prevents libata from accessing severed controller and/or device. * While at it, use named constants for ACPI events and move uevent signaling inside host lock. Original patch and testing by Holger Macht. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Holger Macht <hmacht@suse.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17virtio: fix race in enable_cbChristian Borntraeger
There is a race in virtio_net, dealing with disabling/enabling the callback. I saw the following oops: kernel BUG at /space/kvm/drivers/virtio/virtio_ring.c:218! illegal operation: 0001 [#1] SMP Modules linked in: sunrpc dm_mod CPU: 2 Not tainted 2.6.25-rc1zlive-host-10623-gd358142-dirty #99 Process swapper (pid: 0, task: 000000000f85a610, ksp: 000000000f873c60) Krnl PSW : 0404300180000000 00000000002b81a6 (vring_disable_cb+0x16/0x20) R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:0 CC:3 PM:0 EA:3 Krnl GPRS: 0000000000000001 0000000000000001 0000000010005800 0000000000000001 000000000f3a0900 000000000f85a610 0000000000000000 0000000000000000 0000000000000000 000000000f870000 0000000000000000 0000000000001237 000000000f3a0920 000000000010ff74 00000000002846f6 000000000fa0bcd8 Krnl Code: 00000000002b819a: a7110001 tmll %r1,1 00000000002b819e: a7840004 brc 8,2b81a6 00000000002b81a2: a7f40001 brc 15,2b81a4 >00000000002b81a6: a51b0001 oill %r1,1 00000000002b81aa: 40102000 sth %r1,0(%r2) 00000000002b81ae: 07fe bcr 15,%r14 00000000002b81b0: eb7ff0380024 stmg %r7,%r15,56(%r15) 00000000002b81b6: a7f13e00 tmll %r15,15872 Call Trace: ([<000000000fa0bcd0>] 0xfa0bcd0) [<00000000002b8350>] vring_interrupt+0x5c/0x6c [<000000000010ab08>] do_extint+0xb8/0xf0 [<0000000000110716>] ext_no_vtime+0x16/0x1a [<0000000000107e72>] cpu_idle+0x1c2/0x1e0 The problem can be triggered with a high amount of host->guest traffic. I think its the following race: poll says netif_rx_complete poll calls enable_cb enable_cb opens the interrupt mask a new packet comes, an interrupt is triggered----\ enable_cb sees that there is more work | enable_cb disables the interrupt | . V . interrupt is delivered . skb_recv_done does atomic napi test, ok some waiting disable_cb is called->check fails->bang! . poll would do napi check poll would do disable_cb The fix is to let enable_cb not disable the interrupt again, but expect the caller to do the cleanup if it returns false. In that case, the interrupt is only disabled, if the napi test_set_bit was successful. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (cleaned up doco)
2008-03-17virtio: Enable netpoll interface for netconsole loggingAmit Shah
Add a new poll_controller handler that the netpoll interface needs. This enables netconsole logging from a kvm guest over the virtio net interface. Signed-off-by: Amit Shah <amitshah@gmx.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-17virtio: handle > 2 billion page balloon targetsRusty Russell
If the host asks for a huge target towards_target() can overflow, and we up oops as we try to release more pages than we have. The simple fix is to use a 64-bit value. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-17virtio: Fix sysfs bits to have proper block symlinkJeremy Katz
Fix up so that the virtio_blk devices in sysfs link correctly to their block device. This then allows them to be detected by hal, etc Signed-off-by: Jeremy Katz <katzj@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-17virtio: Use spin_lock_irqsave/restore for virtio-pciAnthony Liguori
virtio-pci acquires its spin lock in an interrupt context so it's necessary to use spin_lock_irqsave/restore variants. This patch fixes guest SMP when using virtio devices in KVM. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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